Enhanced bioelectricity generation of air-cathode buffer-free microbial fuel cells through short-term anolyte pH adjustment

2018 ◽  
Vol 120 ◽  
pp. 145-149 ◽  
Author(s):  
Yueping Ren ◽  
Jinli Chen ◽  
Xiufen Li ◽  
Na Yang ◽  
Xinhua Wang
Keyword(s):  
Fuel Cells ◽  
Microbial Fuel Cells ◽  
Air Cathode ◽  
Short Term ◽  
Ph Adjustment ◽  
Bioelectricity Generation

Enhanced bioelectricity generation of double-chamber air-cathode catalyst free microbial fuel cells with the addition of non-consumptive vanadium(v)

RSC Advances ◽  
2016 ◽  
Vol 6 (39) ◽  
pp. 32940-32946 ◽  
Author(s):  
Jiaxin Li ◽  
Baogang Zhang ◽  
Qinan Song ◽  
Alistair G. L. Borthwick
Keyword(s):  
Fuel Cells ◽  
Microbial Fuel Cells ◽  
Cathode Catalyst ◽  
Air Cathode ◽  
Energy Devices ◽  
Bioelectricity Generation ◽  
Catalyst Free ◽  
Double Chamber

Improvement of microbial fuel cells (MFCs) via bioelectricity recovery is urgently needed in micro-energy devices nowadays.

Polyelectrolyte–single wall carbon nanotube composite as an effective cathode catalyst for air-cathode microbial fuel cells

2014 ◽  
Vol 70 (10) ◽  
pp. 1610-1616 ◽  
Author(s):  
Huanan Wu ◽  
Min Lu ◽  
Lin Guo ◽  
Leonard Guan Hong Bay ◽  
Zheng Zhang ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Carbon Nanotube ◽  
Oxygen Reduction ◽  
Microbial Fuel Cells ◽  
Reduction Process ◽  
Air Cathode ◽  
Single Wall Carbon Nanotube ◽  
Single Wall Carbon ◽  
Cathode Catalysts ◽  
Metal Free

Polyelectrolyte–single wall carbon nanotube (SCNT) composites are prepared by a solution-based method and used as metal-free cathode catalysts for oxygen reduction reaction (ORR) in air-cathode microbial fuel cells (MFCs). In this study, two types of polyelectrolytes, polydiallyldimethylammonium chloride (PDDA) and poly[bis(2-chloroethyl)ether-alt-1,3-bis[3-(dimethylamino)propyl]urea] (PEPU) are applied to decorate the SCNTs and the resulting catalysts exhibit remarkable catalytic ability toward ORR in MFC applications. The enhanced catalytic ability could be attributed to the positively charged quaternary ammonium sites of polyelectrolytes, which increase the oxygen affinity of SCNTs and reduce activation energy in the oxygen reduction process. It is also found that PEPU–SCNT composite-based MFCs show efficient performance with maximum power density of 270.1 mW m−2, comparable to MFCs with the benchmark Pt/C catalyst (375.3 mW m−2), while PDDA–SCNT composite-based MFCs produce 188.9 mW m−2. These results indicate that PEPU–SCNT and PDDA–SCNT catalysts are promising candidates as metal-free cathode catalysts for ORR in MFCs and could facilitate MFC scaling up and commercialization.

Mitigation of the effect of catholyte contamination in microbial fuel cells using a wicking air cathode

2009 ◽  
Vol 24 (10) ◽  
pp. 3144-3147 ◽  
Author(s):  
Christian J. Sund ◽  
Michael S. Wong ◽  
James J. Sumner
Keyword(s):  
Fuel Cells ◽  
Microbial Fuel Cells ◽  
Air Cathode

Brewery wastewater treatment using air-cathode microbial fuel cells

2008 ◽  
Vol 78 (5) ◽  
pp. 873-880 ◽  
Author(s):  
Yujie Feng ◽  
Xin Wang ◽  
Bruce E. Logan ◽  
He Lee
Keyword(s):  
Wastewater Treatment ◽  
Fuel Cells ◽  
Microbial Fuel Cells ◽  
Brewery Wastewater ◽  
Air Cathode
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